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AES Export Declarations: Zero Gross Mass Validation Rule Effective from December 3, 2025

  • Starting December 3, 2025, the AES System will validate that if the number of packages in a goods item is zero, the gross mass must also be zero in export declarations.
  • This rule has been previously documented but will be enforced from the specified date.
  • The rule aligns with existing practices for declaring gross and net mass when items are packaged together.
  • For items with zero packages, both the number of packages and gross mass must be declared as zero, while net mass reflects only the specific goods.

Source: sede.agenciatributaria.gob.es

Note that this post was (partially) written with the help of AI. It is always useful to review the original source material, and where needed to obtain (local) advice from a specialist.



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